Obsessive compulsive disorder has many unknowns, including what causes it, why symptoms can differ so much between people, how medication and therapy for it actually work, and why treatment is ...

No single gene causes OCD, but identifying the genetic markers linked to the condition can help clarify how it develops. Viktoria Ruban/iStock via Getty Images Plus Obsessive compulsive disorder has ...

Biologically speaking, there is no organ as vital or complex as the brain. And yet, the brain still remains somewhat a of a mystery-there’s a lot that even experts don’t know. Another troubling fact ...

Compulsive behavior results from too much self-control caused by brain inflammation, not just habit. Anti-inflammatory ...

Carol Mathews receives funding from the National Institutes of Health. She is a member of the scientific advisory boards for the Family Foundation for OCD Research and the International OCD Foundation ...